/*
 * Copyright (C) 2009-2015 FBReader.ORG Limited <contact@fbreader.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

package org.geometerplus.fbreader.book;

import org.geometerplus.zlibrary.core.util.MiscUtil;

import java.math.BigDecimal;

public final class SeriesInfo implements Comparable<SeriesInfo> {
    public static SeriesInfo createSeriesInfo(String title, String index) {
        if (title == null) {
            return null;
        }
        return new SeriesInfo(title, createIndex(index));
    }

    public static BigDecimal createIndex(String index) {
        try {
            return index != null ? new BigDecimal(index).stripTrailingZeros() : null;
        } catch (NumberFormatException e) {
            return null;
        }
    }

    public final org.geometerplus.fbreader.book.Series Series;
    public final BigDecimal Index;

    public  SeriesInfo(String title, BigDecimal index) {
        Series = new Series(title);
        Index = index;
    }

    @Override
    public boolean equals(Object other) {
        if (this == other) {
            return true;
        }
        if (!(other instanceof SeriesInfo)) {
            return false;
        }
        final SeriesInfo info = (SeriesInfo)other;
        return MiscUtil.equals(Series, info.Series) && MiscUtil.equals(Index, info.Index);
    }

    @Override
    public int hashCode() {
        return 23 * MiscUtil.hashCode(Series) + 31 * MiscUtil.hashCode(Index);
    }

    @Override
    public int compareTo(SeriesInfo other) {
        final BigDecimal i0 = Index != null ? Index : BigDecimal.ZERO;
        final BigDecimal i1 = other.Index != null ? other.Index : BigDecimal.ZERO;
        return i0.compareTo(i1);
    }
}
